US184774A - Improvement in apparatus for transmitting and receiving signals - Google Patents

Description

.1. s. erssomm. APPARATUS FOR TRANSMITTING AND RECEIVING SIGNALS, 89c.

Patented Nov. 28, 1876 No. 184, 77 I.

UNITEn JoHN sAoHEvERELn GIISBTORNE," or BUOKINGHAM siren-Er, LONDON,

, ENGLAND.

IMPROVEMENT IN APPARATUS FOR TRANSMITTING AND RECEIVING SIGNALS. &c.

Specifieationforming part of Lettrs'Pat'ent No. 184,774," dated November 28,1876 application filed September 27,1876.

To an whomit'mdiy camera; I n

Be it known that I, JOHN'SLGHEV ERELL GISBORNE, of Buckingham streen London, in the county of Middlesex and Kingdom' of England, electrical engineer, have invented Improvements in Apparatus for Transmitting and Receiving Signals and Orders orMes sages, of which the following isa specification:

This invention has'for' its object the cheapening andsi'rnplifying the const'ructionof me chanical telegraphs intended il1( )1'6 'part'icn} larly 'for use on board st'eain andsailing ships for transmitting ordersfr'on the f bridge? to the engine-room vor tofthe 'steersrnan, and fo'r enabling the' order so transmittedtofbe repeated onthe transmittinginstruinent, the said improved apparatus being also'applicable for use in mines, buildings,'and' other places also on board meh-of-wa'r and in forts or transmitting and repeating the orders required for Working the guns. I p

According to'lny inventionI transmit the desired order from the transmitter or sending. instrument to the" indicator onre'ceivingim strument (which instrumentsmay'be situate at any'distance apart and in any desi'redrela tive positions) by a single flexible connector, in combination with a Weight or sp ingat said connector being attached one end to the periphery of a wheel or quadrant contained inside the casing of the transmitter, while'itsopposite end is attached tothe periphery of another wheel or quadrant con} tained inside theindi'ca-t'or. The repeating on: the dial of the transmitter of 'thejorder which has'been given is alsoefiected'jby'a single; flexible'connector and weight orspring, which connector is, in caseof 'a steering-telegraph, attached so a wheel or quadrant 'in'ountd on the rudder-post, or otherwiseea'used" to turn by themotion of the rudder, so that 'the:rud-

der itself acts as a tell-tale by indicating its position on the" dial of thetransniitter. The

connector which I prefer to employ consists of pieces of chain'of sufficient length to allow for the requisite amount of travel round th ef different pulleys or quadrants andguide-pulleys, with intermediate lengthjsfof straight rods or Wires "attached thereto;

The same" arrangement may beused ar-aun ie for gijvf .ing a reply back from the distantsignal to 3'is1a'front elevation of the'inilicator Iojr' receivinginstrument, and Fig. 4 is a 'cor're' sponding vertical section of ithesame, taken at right angles 'theretoL' This in'struinent is to be situate in convenient proximity to the person for whom the orders are "intendeiljjfor eXample,'on board ship it would. be placed in the ei1gine room, or in fronti'of thesteersinan, as the'case may be, so that any order sentby the transmitter niay be readily'observ ed oii the dial of the indicator, and the salneordr repeated back to the dial'of the transmitter, T

u is thejca'singor head of the transmittefi w'hichmay be mounted on a hollow pedestal: (Jr-stan er convenient height for the'hand iof the operator. b is a' dial, bearing on its "rate the various orders "to be sent. 0 is a central spindle or bolt, which carries two separate and independent tubular spindles, d and a,

turning freely thereon. The tubular spindle d has fast thereon a' double or single grooved pulley or 'uaarann f, while the tubularjspindle e'carries, in like manner, a single robved p y q f n yt V Onthe squared outer'end of the tubula'r spindle dthereis mounted the pointer 'h, and onIthesqiiaredi'outerend of thetubiilar spin-- die 6: there issi'mi lar'ly moun ed the actuating lever-handle'i, to which is connected, outside the casing, the pointer A spri'ng-lever, l, is hinged at 'm to thebackof theactuatiug handle, and carries at 'its'lo wer end a pih,"n,f which, when the spring-lever isrelease'd, enf ters' one or other of aseries 'of' holes'jor notches made in'the back ot 'tht casing, there being: 'a holeor notch to correspond to each order on the "dial.

The indicator or receiving instrument, Figs. 3 and 4, is of a similar construction to the transmitter or sending instrument, the parts which correspond to those in the transmitter being-marked with the same letters'of reference accented. In Fig. 3 the dial is shown as facing in the same direction as the dial ot'the transmitter above, but in Fig. 4 I have shown the dial of the indicator as facing in the op be more clearly understood on referring to' the diagrams (drawn to a smaller scale) at Figs. 5 and 6, which represent, respectively, the arrangement of transmitting and repeating connectors when the dials of both instruinents look the-same way or correspond to Figs. 1 and 3. The weight W is suspended by a cord or chain, 10, which is attached to and passes partly round the second groove of the double-grooved pulley f, and hangs from the same side of the said pulley as that on ,which the connector 0 entersit from the transmitter.

' The repeating-connector 0, Fig. 6, which is employed for repeating on the dial 6f the transmitter the order transmitted, is attached to and passes partly around the pulley g in the indicator at one end, while its other end is at tached to, and passes partly around, one of the grooves of the double-grooved pulley f in the transmitter. A weight, W, or a spring, is

suspended from, or attached to, the periphery of thesecond groove in the said pulley f, the said weight being suspended by a cord or chain, 19, from the opposite side of the periphery of the pulley to that on which the repeating-connector 0 enters from the indicator.

When the dials of the two instruments look in opposite directions, as in Figs. 2 and 4, then the arrangement of the connectors o 0, with their weights or springs W W, will be as shown in the diagrams, Figs. 7 and 8. When using a single in lieu of a double grooved pulley, the connector is pinned to both the pill leys, and the weight or spring attached to the .free ends of the connector itself.

pointerk opposite to the order to be trans mitted. This movement of the handleimparts 'a corresponding movement to the tubular spindle e and pulley g, which is transmitted to the pulley f in the indicator by the single flexible connector 0. It the handle be moved in one direction the said connector will be more or less wound around the periphery of the pulley g, and will, by turning thepulley f in the indicator, wind up the weight W. Should the handle of the transmitter be moved in the opposite direction, it will allow the pulley f in the indicator to ,be turned in the reverse direction by the action of the weight or spring W, and as the pointer h in the indicator is fast on the tubular spindle d, which carries the pulley f, the said pointer will in either case move in concert with the handle of the transmitter, and will, consequently, indicate the corresponding order on the dial of the indicator. On arriving at the order required, the pointer 70 of, the transmitter will be held in that position by releasing the springlever l, which will cause the stop-pin a to enter the corresponding-hole or notch in the back of the instrument.

The order thus transmitted is replied to by being repeated on the dial of the transmitter, by moving the actuating-handle 13 of the in dicator or receivinginstrument, Figs. 3 and 4, so as tobring its pointer k to the order received, thereby turning the pulley g, and, through the action of the single connector 0 or of the weight or spring W, as the case may be, on the pulley f, moving the pointer h of the transmitter around to the corresponding order on its dial, thus showing that the order has been received and understood.

It will be obvious that, according to the arrangement of connector and weightor spring, hereinbefore described, the weight or spring will, in some cases, be the actual prime mover,

and will, in fact, tend to draw the actuatinghandle 6 or i of the instrument over in one directi on when released ,hence the necessity for the stop-pin n and holes or notches, to maintain the said handle in position. ()n the other hand, when the actuating-handle is moved in the reverse direction, the gravity of the weight or the power of the spring will have to be overcome. Should any inconvenience arise from this action of the weights or springs, the arrangement shownin the diagrams Figs. 9 and 10 may be adopted. I

According to this arrangement I attach a counter-weight or counter-spring, O W, to one side of the pulley g in the transmitter, and another counter-weight or counter-spring, G W,

- to one side of the pulley g in the indicator, in

such a manner that the said counter weights or springs shall neutralize the action of the weights or springs NV and W, already referred i to, and enable the actuatinghandle '5 1' of either instrument to remain at rest in any position without the necessity for a stop-pin or other retaining-catch.

If desired, a striking-gong may be combined with the indicator, as shown in Figs. 3 and 4;, for the purpose of calling the attention of the person for Whom the order is intended. The

gong q may be attached to any convenient part of the indicator, and be struck by oneor other of the two hammers 1' r as the pointer 11/ passes around in either direction from one orcenter at 'v, and is provided with a projecting arm, w, on each side, for the purpose of raising the stem of one or other of the springhammers r, and suddenly releasing it, so as to cause either of the hammers to strike the gong as each pin deflects and releases the spring- ;lever uin either direction.

Although I have described and illustrated a mode of working a gong in connection with my peculiar single flexible connectortelegraph and repeating instrument, I wish it to be understood that I do not claim such gong arrangement as constituting any part of my said invention.

It is obvious that inlieu of using a circular dial and revolving pointer either in the transmitter or in the indicator, a straight indicating-tablet may be used having the requisite orders marked thereon, the pointer or indicator being caused to travel longitudinally along such tablet from one order to another by a single flexible connector. This connector is attached, at one end, to the actuating-handle of the transmitter, while its opposite'end is attached to the pointer of the indicator-tablet, a weight or spring being so connected tothe said pointeras to cause it to travel in one direction by the actionrof the said weight or spring, or, if preferred, counter-weights or counter-springs may be combined with the before-mentioned weights or springs, so as to neutralize their action, and enable the handle of the transmitter or of the indicator to remain at any given order without the necessity for stops or catches, as before explained.

In applying my singleflexible-connector arrangement to what is known as a rudder tell-tale, it is simply requisite to attach one end of the single flexible connector to a wheel or quadrant mounted directly on the rudderpost itself, or caused to turn by intermediate gear from the rudder-post, the opposite end of the said connector being attached to the pulley f of the steering-transmitter, so that the rudder itself will always indicate its position on the dial of that instrument, which is marked with the usual steering-orders as well as with degrees. The dial of the steering-indicator, by which the steering-orders are indicated to the stcersman, is also marked with the same orders and degrees. I sometimes propose to employ a single flexible connector as an engine tell-tale for indicating on the bridge, or elsewhere on a separate dial or tablet, the direction of rotation, as wellas the number of revolutions of the engine-shaft, so

that the order, having been transmitted to the engineer and repeated by him by the apparatus hereinbefore described, a further check will be obtained by causing the engine itself to indicate on the separate dial or tablet the direction and speed of working. This I accomplish by a single flexible connector, which passes over, or partly round, a pulley or quadrant carrying the pointer of the said indicatin g-instrument, and has both its ends attached 1 to springs, which act in opposite directions. I

An eccentric or tappet is fitted on the engineshat't in close proximity to the said flexible connector, and so arranged that at every revolution of the engine-shaft the said eccentric or tappet will cause the connector to be sud-- denly pulled and released again, the result being that the pointer on the corresponding dial or tablet will be deflected in one direction or the other, according as the engines are- I am aware that it has been already prov posed to work mechanical telegraphs with double or endless flexible connectors passing round the pulleys of the transmitter and indicator in the form of an endless band or double connectors, such an arrangement necessitating not only the use of an unnecessary length of connector, but also an increased number of intermediate guide-pulleys for the proper guiding of the said double connectors; and, therefore, I lay no claim to the use of flexible connectors generally in the class of mechanical telegraphs herein referred to neither do I claim, generally, the use of a single flexible connector for transmitting motion from an actuating-lever to a signaling apparatus, as I am aware that such'an arrangement has long been known and used as applied to railway-signals; but

What I consider to be novel and original,

and, therefore, claim as my invention, is

1. The combination, with an indicating-dial and transmittingwheel or segment, g, and connector 0, of the repeating-connector 0, wheel or segment f, and pointer, substantially as set forth. i

2. The transmitting mechanism, substantially as specified, for giving a distant signal, in combination with the repeating mechanism, substantially as set forth, to indicate at the transmitting end the reception of the message, substantially as specified.

In witness whereof I have signed my name in the presence of two subscribing witnesses.

JOHN SAOHEVERELL GISBORNEV Witnesses:

EDWIN P. ALEXANDER,

14 Southampton Buildings, London. A. E. ALEXANDER,

14 Southampton Buildings, London.

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